Alnor 335-D TSI Digital Fume Hood Monitor, 70 to 250 ft/min

The Guardian 1000 digital airflow monitor continuously monitors air flow and provides a digital readout of actual face velocity the audible alarm alerts the operator when the airflow is outside a preset range this video will walk you through setting that preset range for protector fume hoods tools required include a calibrated thermal anemometer tape measure and tape to initiate calibration press enter and hold on the touchpad until the main menu screen appears scroll up or down by using the plus and minus buttons to select setup and press ENTER to display the setup menu scroll down and select calibration and press enter this will bring up the calibration menu password screen select the individual values of zero zero zero zero by pressing enter for each digit this will initiate the calibration mode the screen will read open the sash to the normal operating position and measure the face